Coirasci ststsk foe electric motgjs



W. SYKES.

CONTROL SYSTEM FOR ELECTRIC MOTORS.

APPLICATION HLED JAN 10. I912.

Patented Aug. .29, 1916.

3 SHEETS-SHEET 1- 5 M v P; /K\ k 1: 4 5% 0 b 4, E8 #23 8 52 6 3 U 0 av my I EN OR WITNESSES! W. SYKES:

CONTROL SYSTEM FOR ELECTRIC MOTORS.

APPLICATION man 1AN.10, 1912.

1,196,172. Patented Aug. 29,1916.

3 SHEETS-SHEET 2.

mzmma BY J ATTORNEY W. SYKES. CONTROL SYSTEM FOR ELECTRIC MOTORS.

APPHCAHON mm m. so, 1912. l 1 96, 1 72 Patented Aug. 29, 1916 s SHEETS-SMET 3.

S a 3 E .W w

mvwow ATITORNEY I WITNESSES:

TATES PATENT OFFICE.

WI'LFRED SYKES, OF FITTSBURGH, YENNSYLVANIA, ASSIGNOR TO WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

GQEITBGL SY$TEM FOB.- ELF-CTRIC MOTGRS.

Specification of Letters Patent Patented Aug. 29, 1916.

Application filed January 1Q, 1912. Serial No 870,527.

To all whom it may concern:

Be it known that I, \Vimuenn Svrcns, a subject of the King of Great Britain. and a resident of Pittsburgh, in the county of Allegheny and State of Penns elvuiiizir have bodies my invention. Fig. 5 is e. JiQW, cor- 6o invented a new-anal uwsful iifiiffi'v'fiiifllil in responding to Fig. 4, of still another l'!\()(ll- Control Systems for i lmeivric h'iotors. o'l': fication of my invention. and (3 anti 7 which, tho following is a, specification, are views iiori'esponiling respectirely to My invention relates to controi systems Figs. 2 find 4, of still another modification of electric motors and it has pccial referof my invention. core to such systems: adapted to go\'- v e/fm" 'ing to Fig. 1 of the drawings, the cm theoperation of electric hoist motors. system here shown comprises an electric mo- Tho object of my invention is to provide tor 1 which may be designated as a hoist simple, and automatic. means f r preventing motor, on electric motor 2 which may e tho concurrent acceleration of two motors designated as a trolley motor. lino switches which are utilized in systems of tho Pi- 5; 3 Ma -land a plurality of independently onnhovo indicated, Without Zntcrieringr nth era. ncccioroting switches f to 3). inthe independent or simultaneous oporuiion cinch e, and ll to H. inclusiw, for the re of both motors after onc oi them hue no Spo tive motors. The line switch and tho mined iull operating h ve some other accelerating niches of motor 1 are gov predetermined opersitirn 1 my emu-(i. by 2t iron-tor switch 37 which is adapt Iiilectric motors are mi in oil to ocoupv positsonu. m if. v ail-l and, the opa -gri f 1 th mvitclwi; "which cont \l the motor .5 are which tho n'mtors 'wh "vi-nod H u :atcr L'h f which trolley and tho hob; filtlpifid "lo occupy poeitions g. )2. :i. j, I: and 7. 30 Shfil'tfil and ogieru'i'm The oiiwamtion will ire circuit connectium A uhan/ire us 'lolloi's: Assuming that r -nzzwter switch and tho rontroi switches; t shimn in thc (lru wings, motor may he w: switch ."i is moved to position =1; 35

iv; circu t i roiupl'eteil min any mitzihlenourwo lner took on ml thrmqgl. line mini luciii unm'liwirsl l VHU /t nmnhers 1H t lxwh arc i llllgi -tl contort member 20 -l from g' i witch 14 i up n, contact nirinhers ii fitiii of operutl irh arc bridged by contact member 15:5 po'wor compan 7 its rhorgea i hon switch 4 is opcn, conductor 23, contact upon the total o n. is moral and also tinge! it of master switch 15, contact mom upon the maximum ourirg rmwhsirrher 25, contact linger 28 coruluctor 27 and mi'm'xl periodu: it 7 i i'JF'iV i-= ;i{-. coil 253 of irh ii to ncgzitiw line roi'n'lnc-- to hoop th maxim i tor 3-1. Line: switrh is; thus closed. com a. load pi)? 1:2 plating: :1 motor cirrtuit from com lm-tor 17,

It has been 111 aim to 'ivshstnzz-iinfiuinthrough switch 3.. zzrnn'ztiiie and field in; ing average load Ctfllfilti ilflc oy rm'ulcrim it not windings of :iotor l and rosisior scoimpossihlc for both rho UFllif. r i 2hr: liomt tiom 30 to ()4. inelnkiw. to negative lino conmotors of an ore o i lliiif'liilz doctor 31. Ar; switch 23 iv Mon-ll, my; gut i to he ilhffilfiiith i at is: oil: meinhr-r 3( is movmi out of cngzigcnient with m l 1 Jul th yeah vro- Contact incnahers 3"? into engagement with Emmi :y .2!i i l: or: E the moconturit incnihers 3S. ("mournlenthv it is imtors on the pooh omiowii in the ziccolernriossihlc to supply emirgy through the nunstion of the other. ter switch 16 to the line switch 4 and the Figure 1 of the accompanying drawing is control switches 10 and 14. As the master a diagram of u rontrol system comprising switch 15 successively occupies positions Z) to a plurality of ind v aimuly operatedw f, inclusive, contact fingers 39 to 43, inclu- 5 switches embodying my invention. Figs.2 sivo are successively brought into contact and H10 mum? with cvnninct mm 4 M'ifiii app :3 a yr lefition 6.5 (-1 the '5 R? Whvn thv mmhnie; wnh whin'ia the E wmzpies its 0%? puhitilm 1 and A being brought: whsn the corn iefi its 1 1:1 forward 2 pfisitmns. The lever 60 1 H 1?! m'n'm (-36 and 67 whi rh y :zwimied on a pmjection GS of Um :mnrqn and 2m? pmnded wlth c0- npcrzztinq pmyucmns (:59 whmh constltute stops i113 Hm the rehitivo rotation of the arms in mm du'ectmn- The arms are mused to art as a. smgrlc. lever undvr normal (mndlinns. :15 i iw' Fm 'anzs and BL each single notcix 5.92 which may he engaged by lever 93 when the cnntmlhw with which it is associated ucmpcs'ifs 1? pvcitimt, E; ch of the levers $33 is: piwfmfi sup wflmi at Ali and to llh 'iho 1212 l w arm m: 3on2: in

H. wtmn i iw no of ions by Wilson of the winner ill? with :i runiougnol E9 4" Mini-- ionirol drum 38 to msisiions.

l 1 in loo our? roof ill? motors r nd no iiiav d m I V tlli'igfll 'i oi iho ilrun: will he energized on no??? v-hoo the first and lost switches of the ith?! $1}! om are either both open or both m nlh'in'n will carry contains to st lrmiir fi l nod :2? wt 3 im molom whi ii are arrnogei'l i bimowll out of its hill the hmkmot'lor non:

"lull multiple forward posilion,

or i'ia full imrullel rcn oonolor oonii'ollor out of in oil' position ml of 95*: Full wooing: p 1

moi-menu it 1: posmhlo ii fi'si'wx bu rm iily HH'ltISEMWl l-otl's m" which are mm-ll to contro iLWo motors may n (sno- 7 in {,w mow may within Z'lm and lion and that arious I oifhor its oif ils F f r:

with :1 piurnlity of motorsi controlling moans for ouch motor and means for prevontiogz the slanting of tho other motors (hiring: HM; avfioloriition of any one of (he n'ioiiol's. g

1n a control system, the combination with two elevtrio motors, a controllor for encl'i motor and inierlooking moans hotwoon the cz'mtiollers for pro eniing thosinriing of either motor when the oilicr motor is lacing acifolomtei'l.

3. n a control system, the Qmnliinntion with two electric motors. fl controller for each molor :H'lnptl to occupy a plurality of accelerating poi ions. an off position and 9 a full running position, of means for pro-- voncing the :n'ijustnionl; of ow: of tho controllers while the M ler controller onpios iirl cu'olvmiino L ion.

whim the mnihiim'iion moimfizi. plum." oi lii control ova; for and n for governing! iho switches of Qm'fh momr, of ii'ilIFfiS for preventing oloning of one sci o9 soiti'ihoi io novelernte one of iii-o motors during the noselomtion of the other motor;

in n oonnol system, the oombinntion with a pair elutric motors, two groups of independently operated switches adapted to olose in :i predetermined sequence and to nccolerale (no respective motors. of means for preventing the acceleration of one 111Gb)? exlwopiz whom the: and last arwitrh of E controi owztohes of the ix occopy (:orreapzn; ling posii'ions.

\i. in a nontrol system, the Mnnbinntion with a pair oi electric IliOtC-YS. two groups of independently operated switches adapted to close in a predwarmined FEQJQIHQ and to 1 05 accelerate the ror-pwtivo motors of means for provonriog the :wcelermion of one motor exrept. when the first nnrl last Switches of the control mvitches of the other motor are Pither both open or both closed.

7. In :1 control systenn the combination with :zplumlity of motors, of controlling menus; for each motor, and means operative only during the starting of ono of Said motors for prevmiting the starting of tho 115 other motoz'o (luring tho zn-ovimniion of said motor:

In :i control spit-om, film comhinaiion with two @lectrio motors, of a controller for (MC/ll motor, and interlocking means between said controilars, operative only during the, skirting of eithor of said motors. for pro venting the starting of either mot/or when the other motor is being accelerated.

9. In a motor control system, the combinatlon with a plurality of controllers, each of said contmllors having a rotatable member provided with reams, of a pivoted memher having rooms for engaging said assesses and so arranged that each of Said coniitollers flo mrnlom, y Gash moiil'i is, reizzineli in i off position until the other iizwi uin; rotated in a predoter uli opeirzsiii posii'ion. k

M. In a motor control system, the combimxLion with a plurality of controllers haying no of! position, each of said controllers having a mtntnbie member provided with engaging portions, of m ans for preventing wtmion of each of said controllers from its oi'f position until the other: controller has been rotated to a prcdetevnined operative WILFRED SYKES. Vitnesses:

R. Jr DEARBORN, B. B. HINES. 

